Bearing



Jam), 1923.

F. L. O. WADSWORTH.

BEARING. FILED JUNE29 1918.

' 4 SHEETS-SHEET 2\ BY i www k ATTORNEYS Jan. 9, 1923. 4 LMMELL?.

F. L. 0. WADSWORTH.

BEARING. man JUNE 29. 191s. 4 SHEETS-swim a:

ATTO R NEYS Jan. v9, 19% 1M-mgm F. l.. o. WADSWGRTH.

BEARING.

FILED JUNE 29 1918. i SHEETS-SHEET ll*- lNVENTD ATTURNEYS Patented Jan. 9, 1923.

lilitTElilll" i., lltSEG-NDR TU ALBERT LVA. NIA..

BEARING;

Application filed .Time 559, 1918. Serial No. fllil.

T all whom it mietvf/ een A12/rn.:

Vlie it linmvn that l l* niet. li. (l. llllinrfl- 'wen'.in, it eitncen et the il l v.tee nl" iliniei'ien., :unl n, i'esident et littnln'n'sih,

iillegheny (leunt/y, nintl tltnte el l; l

venin, hswe .invented eeitnin. new :in inl linproveniente in .leeirniggs7 et Wlneli ation, :e ei'enee the following is i .eneeitie i i wing -;li:fmfingej beingv heil te the aweennjmn 10 tei-inline; it pint thei'eeit.

My invent-imi relates te beni-nigga :intl pmi ly te tlnfnnt heeiingge Snell ne the n'niti, 7 j eetehlieheil :ind 'ineintninetl when t; ie npelnting by the tiltingY et tlnJ eigniente, ei' :tleizihly eenneetecl eet;-

inentf i pertinne et en einn1lei-hifning); n? ei' eeiiee el? inenlliein. y in reemnse te the veilen Y :ietien el? the eil.`

.20 'Une elijeet et in y invent hein' inn le 'in nim/ille, niple will etn "fi lm el than wenn leetwe ineens ini eixnin.

.. ,Y l i :nelle ein new; mi t melt nnilei' lend.

l A l r`ell linnwi. tlni'net lnfitiinigff; el the hline en exelwtlnigly len' el 'tin-tien, (lne te the 'l'zlet i tliinet hearing l; i'ateil hy, und

new feg i .i Y nneil eil. iiline tln'lt :like :n:'zenietieelly e. lished nini ineintnnied my the i'elntl '-.fe Shining ei' ,Sujet-.ice nieveniente et the eneneintingg thinet snppei'tiiigg; tee

in the plaine et heinfin eniig'eint :inn eenetinw il lieznfii'ig if hei' Tine foi-- e' eiipweeinent :incl the i. ,freelnipecl eil l'iinie effected hy the inl ei' tengentiel tlexine; ei ieekingi; e' Segmente; 'while Seial eefjnients effe eine enpfihle el ini'ziiisnwifee ei in liti iexingiij ni' .fieltliiigg,u te preserve the eeeentizil i'elttisi'n l: the thickness el? the (ihn enel the 't lineei' sneed el :nininfe nio'veinent 4.5 L nl entes' edges ez: nenes et beni'- .7" unifi viewed along' izinnil imliril eeetiene-even when ene tnlilieheil in the enf-,inil type nire tei. nien? :levoifable te lenti; eentinnecl eei'viee under heavy leeile than cnn be obtained lay the nee el? any leini el: hill en i'ellei' hearing eonzfitinetien. lint :i l envi/inne tliinet lfieeiingeW whethei et the ,ee-ezilli-wl continuons i'inp; type eielj' the li-nggshin'y flexible Shoe type-eie :subject to the disadvantage "thfit they piesent n` relatively high static snellieient et friction; and therefore elle? very conside-fehle reeistnnce te the initial movement treni the poeition of reet in ethei Wei-(le they stinkt hard es it ie ternieift end this relatively high lirictionel weistztn :e t0 movement continues `until the snee@ is snllieient te eaniy the eil nnilei' the :nt vencing edges et the hearing Segmente enl'l 'tilt thein eiilltieieiitly to initiate Vthe iei'nn tion elf the Wedge-shaped oil Eline. llxey iVeiuently ieqnii'ee eeneiileieble time; ne the (leeii'ed tilting; inwenwntf; et the inenting finemente ei: filmes-1' zii-e ifi. nefl, te :t greater 0i lees degree, beth 'ny the lend en the heating ein. ifxeeemwheh tende, eil nein-ee. te iliem these Sni'lnei-n inte pni'ille-ilieni1 with ezieh (')tlleim--znnlby the tec-t that the eni' temes eil the :shoes nlnet. in nenel eenntnlnwtiene.` nieve in li (lii'eetimi opposite to that in which the Counting; lieni'ingg; nieinhei tende te nieve tliein in ei'dei' te nhtnin the desired nil 'lili'ne by eiieinn'lei'entiztl tilting' et thune nieinhei'n.

lt it?. the elijeetel' this iini'entien te eliini :nete the zilynfe leeei'ihed objection te lac-ui'- .ingige el: the ileiiihle ehee mf tiltzinle segment 'tj/.ipe by providing hell ni? roller heating' nienibei'e which ziet in eeiiihinetien with the sui'lfziee hearing ineinlieire to relieve the lzttteil of eitheil the Whole.y 01' e Very enhetentiel parte et the leefl when the hearing is nt ieet. enfl then, es Seen as the parte lieve attained their neimnl Speed et ifetzitive nieveniient. the segmental hearing ineinlweie eet in enel; nnlnner ne to relieve the rollingY laezn'ingf ineinheie el. snlwtentnlly all thi-net were enies- Thus in starting liein ire/St the 'trietieniil ifesietenee t0 in we1nent ie unly that et the hall mi' i'ellei? bearing; elemente et the combination, und l sheen ni' s;i ,p;i11en't1. :ini:- ilnfge heni'ing ineniheis ni'e lett tre.) te tilt imliljv' inte the neceeseify neeitien lfei ilfeini ing; the n'ecle'eelnipeil lnill l'lnnttien"` iilnie; enti nn'.` l. operating eenclitiene the helle ei' inllei'e nie relieved n?? the ein-,e vive lee-alize@ peint en line etieeeee inni felt and the consequent rapid deterioration or wearto which all rolling bearings are subject when called upon to carry heavy loads.

In order that my invention may be thoroughly understood I will now proceed to describe the same in the following specification and will then point out the novel features thereof in appended claims.

The invention is capable of receiving a variety of mechanical expressions, some of which are shown on the accompanying drawings, but it is to be expressly understood that the drawings are for purposes of illustration only and are not to be construed as a definition of the limits of the invention, reference being had to the appended claims for that purpose.

Referring to the drawings:

Figure 1 is a sectional elevation of a thrust bearing provided with rolling bearing members for starting, and constituting a simple embodiment of my invention.

Figure 2 is a sectional plan view of the same bearing taken on the line 2-2 of Fi ure 1.

igure 3 is a circumferential section on the line 3-3 of Figure 1, developed into a single plane.

Figure 4 is a sectional elevation, corresponding to Figure 1, of a modified structure which also embodies my invention and in which the pressure in the oil film is depended upon for transferring the load from the starting roller bearing members to the surface bearing members under normal operating conditlons.

Figure 5 shows a portion of the same bearing in sectional plan, the view being taken on the line of Figure 4.

Figure 6 is a sectional elevation of another embodiment of my invention, the load transfer being effected in this case by a fluid action, due to the rotation of the movable parts of the bearing in an oil bath.

Figure 7 is a sectional plan view on the line 7-7 of Figure 6.

Figure 8 is a partially sectional elevation showing in detail the support for the race ring which forms a part of the same bearlFhe interlocking shoe structure is shown in section in Figure 9.

Figure 10 is a sectional plan view showing a slightly modified arrangement, drawn to a smaller scale.

Another slight modification of the same structure is shown in Figure 11.

Figure 12 is a sectional elevation of a bearing which also constitutes an embodiment of my invention and which is designed to operate equally well in either direction of l.bearing rotation.

Figure 13 is a sectional plan view of the same bearing taken on the line 13-13 of Figure 12.

Figure 14 shows the formation of the rotatable bearing element.

Figure 15 is a View, corresponding to Figure 14, of a slightly modified arrangement which is preferable when the bearing is intended to operate in only one direction of rotation.

Figure 16 is a View, corresponding to Figure 12, of another construction which constitutes an embodiment of my invention.

Figure 17 is a sectional elevation taken on theY line 17-17 of Figure 16.

Figure 18 is a sectional elevation of a combined roller and shoe thrust bearing in which the bearing shoes` are mounted on spaced rollers arranged in such lnanner that the shoes readily assume their tilted positions when the bearing starts and such that the load is transferred to them when the bearing is in operation.

Figure 19 is a sectional plan view of the same bearing with certain of the shoes broken away or removed to disclose the rollers on which they are mounted.

Figure 20 is a circumferential section on the line 20-20 of Figure 1S, and developed into a single ilane.

A sectional detail of the same structure is shown in Figure 2l.

Figure 22 is a view corresponding to Figure 20 of a slightly modified structure which also embodies my invention.

Still another embodiment of my invention is shown in Figures 23 and 24 which are sectional elevations taken at right angles to each other, the section of Figure 23 being furthermore developed into a single plane.

In the form shown in Figures l to 3 inclusive, the foundation or base 10 has a central opening 11 through which a shaft l2 extends and has a spherically curved supporting surface 13 on which a relativel stationary bearing ring 14 is mountef. A thrust block 15 is secured to the shaft and a plurality of bearing shoes 16 are pivotally or tiltably mounted on the thrust block 15 and have thrust surfaces 17 which cooperate with the thrust bearing surface 18 of the bearing ring 14.

The thrust block 15 has recesses 19 into which are set hardened steel or other suitable blocks 20. These blocks form inclined cylindrical seats for ball pivots 21 on which the shoes 16 are mounted, the latter beingr provided with hardened inserts 22 which are spherically recessed to cooperate with the balls 21.

The arrangement of parts is such that the thrust pressure tends to force the shoes inward due to the inclination of the c vlindrical seats 20, and this tendency is opposed when the bearing is operating at normal speeds by the action of centrifugal force on the shoes.

normal conditions. This structure has the great advantage of returning the load to the rolling bearings immediately upon the failure or disruption of the oil film for any cause, such as the loss of oil from the reservoir, without beingr dependent upon any change in the operating speed of the bearing.

In the form shownin Figures 6 to 9 the thrust block 15 is provided with a thrust collar 40 which corresponds to that of Figure 4 and the shaft is surrounded by a sleeve 33 which cooperates with a housing wall 32 to provide an oil reservoir as in the Figure 1 construction. A ring 50 is rotatively mounted at the upper edge of the sleeve 33 and is operatively connected to the thrust collar 40 by a loosely-engaging radial dowel pin 51. The ring 50 extends downwardly and carries a series of turbine blades 52 near Iits lower edge and opposite the bearing surfaces.

The thrust surface 41 of the collar 40 is engaged by a plurality of bearing shoes 53 which are tiltably mounted on the spherical outer ends 55 of inclined rockers 54. As clearly shown in Figure 7 the rockers have trunnion projections 56 and are tiltably mounted in perforated lugs 58 on the base 57, their axes being tangentially disposed to the shaft. The arrangement of parts is such that the thrust pressure tends to move the shoes radially inward due to the inclination of the rockers 54.

This tendency is opposed by a spring band 59 which is mounted on an inner ring 60 and is of wave-like form as clearly shown in Figure 7. This band presses the shoes outwardly and holds them in engagement with the bearing surface 41, and may be replaced by any other suitable yielding means such as the leaf springs 61 of Figure 10 or the coil springs 62 of 'Figure 11. In ease independent springs are used they preferably react on a spring equalizing ring 63.

rIhe spring 59 or the springs 61 and 62 are only adapted to support a portion of the load, and the balance of the load. when the bearing is at rest, is borne by a plurality of rolling bearing members 64, which are mounted on a race ring 65, and are particularly adapted to take a large proportion of the end thrust when the bearing is at rest and when it is starting.

In order to equalize the pressure on the rolling bearing members 64 the ring 65 is provided with trunnions 66 and is tiltably mounted on the inner ring 60, which is in turn pivotally mounted on the radially adjustable blocks 67, 67 (see Figs. 6 and 8) the pivotal axis of the inner ring 6() being at right angles to that of the race ring 65.

The radial spaces 71 between the contiguous edges of adjacent slices are partially closed at their outer ends by the spacing lugs or projections 68 of the race ring 65, and at their lower sides by the loosely interlocking members 69-70 which are secured to the shoes as clearly shown in Figure 9.

The turbine blades 52 on the rotatable ring 50 are s0 shaped and disposed that when the bearing rotates in a clockwise direction as viewed in Fi ure 7, these blades scoop up the oil in whic the bearing members are `immersed and force it outwardly into the partially closed passages between the edges of the bearing shoes. The ressure t us set up in these spaces ten s to force the shoes 53 radially outward, and consequently-by reason of the inward inclination of the rockers-lift the rotatable thrust collar and relieve the rolling bearing members 64 of a large proportion, or all, of the load which they sustain when the bearing is at rest.

Thus when the bearing is running at normal speed the cooperative and combined lifting effects on the thrust collar-due in part to the outward and upward movements of the shoes under the joint pressures of the springs 59 and of the oil forced into the spaces between the shoes by the turbine blade 52; and in part to the tilting of the bearing segments and the building up of the wedge-shaped oil films between the engaging surfaces-is sufficient to relieve the ball bearing elements of substantially all load and consequently of al] rolling movement.

The proper relationship of the parts for the attainment of these results is Iinsured by the universal or ginibal joint support for the race ring which can be vertically adjusted by the radial movement of the blocks 67, and is also flexibly supported in part by the springs 65.

The structure above described is adapted to operate only in one direction, but the modified structure shown in Figures 12, 13 and 14 is adapted to operate in either direction with equal facility. In the form here shown each tiltable bearing shoe 72 is mounted on a spherical end or extension 73 of a flexible arm 74 which constitutes the inner member of a bell crank lever which is pivoted at 75 and has an outwardly extending rigid arm 76.

The resllient arm 74 is sligthly inclined towards the axis of the bearing so that it tends to move the shoes radially out-ward; and the thrust pressure has a component which tends to fiex the arm and force the spherical supports 7 3 radially inward.

The rigid arm 76 of each lever is limited in its upward movement b v an adjusting screw 77 which constitutes a means for indi pendentlv adjusting the position of' each shoe and thus equalizing the pressure on the different segmental bearing surfaces.

Th e roei l i A; [my of tb e leve r, :rnd the fi-,dj rieb nient off" tbe baute. :Quell l' only u, Smell propmtion ot the tln'uet loe/.l ie om the ebow when the beuriu; ie et reet; tbe balance ol: the loud beinga ut tlurt time, our ried by the beurinfr lfsztlle T." which :ne mounted on. zr bell rece tluit 'terme tbe rin; oill e Wheel-Shaped etrruture i lider bef/inge; n, hub til. und e plu felity ol 1 .lull epolree or webs: 8%). The hub Si roi-gie :t bell und eoolret joint "with the bebej being provided with spherical eurlieee 55? which eoope 'Cttee with the eorreepoildinngly Curved enr'lfeee ufl of the bene. llziob rigid. lever urnn To ie enb- Stentielly borifaontul, end loomed below the run. tt), und eeeb. 1H ible :nini lill entende between the spokes tel oil? the Spider eo that the mounting); oft the eliu'fes ie; Yindependent oil :ind does not interfere (with tbe mounting ol" the bell rece. The preeffiure ie equally' distributed emong tbe eererel bulle by tbe bell und Soelret joint ebove described. lbe epider is prevented itroni rotation by :i loosely-enh ing doWel 'pin Filo wbieh eutende upwardly :troni the lfiee is eleerljgv shown in Figure l2.

lileeli eboe ie preferably provided with e hardened insert 86 which. is formed into :t socket to cooperate with the spherical. end 73 ot the lever 7l.

The rotetuble tln'uet coller il] wbioh oorA reeponde to tbe Coller 40 in the previene uree, ie in this structure nroviued with .'u.- rf-.. poolret grooves 8S ee eleziirly shown in Figure 3.42. The beering slioee ere prevented troni rotating en d their reletive position. nieinteined by outwardly extending; lugqje S9 on the Snider hub 8l. "inlie,Y ure eo el1u'f1 ed.- their edges; being- Slightly inelined to 'tbe rudine-that their outer eoruere ero eloee to- 1uetluu' und tbe epneee between tbero ere tnjpered, :rs1 (fleeiljy s-sbown in llipjlnfe 15?.

lben the bearing; ie in. oneretirm the oil ie lrewn into the pooltete bili? ol the rotetirur tbruet collar, ie dieeberged 'there'b'on into the spaces 90 between the ehoee, en'l exerts o preeeure on the ednee ol the beurino' eer niente Wbieh tende to nuove them redielly outward which movement is rAided by the resilieney o" the :irme Tl. 'illxis-z mow-nient if; oullieientq when tbe be if'wmlinn :1 t norrnul :speedw to relieve bull be'ui pruetieull.y 'ull loud, 'libe wedvging;

t. l :reliion oit tb tilt i l oil noon the elioeemwbieb. tende 'lo ffii-eu iterentielly-ar 'n be en bonced br providing: tbe ton unvtfeee olf. the` fzboee Witb. im ferdly inol ined. olote or nieuwe 91 urs shown in Filfrln'e Lil; but tbnue :we not esseentizll.

le in the etrnoturee nrevioi:ely def'erilmd, tbe abone ere jnefeod ligzjbtly nire-insist 1e eooperation; surface ol tbe thruet eoller il? when the beffiringr ie et rest by the notion el? the resilient .ernia 74e; and einee the proben tf. ofthe leed Wbeli they then eupport led. by'. D

Musilli the Shoes readily :resume the tilted. `.1e wbieb :are es ei to eutonoeti- .J esteblieb. und nur 'ein the desired "wedge-elnrped oil ti nie between tbe bearing er irte eee the etrrmtine ol Figuren lit and 13 ie to operette eliwiye in the ernne direction the rudiully dienoeed poelget grooves 855 are prei? if replaced by inclined pocket grooves shown in. t 1re lt., the direetion olf rotation being indicated by the urimr.

ln tbe torni eliown in Figures l@ end 17, tbe etruet .'e eoniprieee :t tl'iruet bloelr 93 to which e thrust coller` Sel :ie Secured. The tlufuffst bloeit ie provided with redel pusezuggee 95g ee clearly shown in llirfure l@ und oleo eurriee t ring.;l 92% which. u; iufovided with turbine bledee thet ure adopted to eeoop up the oil .t .ed in the reeervoir 9i' end deliver it to the rudiel pueeegee il. rece ring); 953 ie attached. to tbe tluue.; bleek und bee un. annuler ebonnel 99 into which. e. releti A Vetetion `ryehennel-ehefg;ed oolleetor 1 0-( ie titled pooling ringe lOl. bei prwided to prevent leakage the ointe between the et ionury und inoveble inerubero. lllhe uniniler ehuniber 99 ie eonneeted to the radial. peintures 35 :Lt 'their outer ende by wieeegee 102; tbe oimungelnent oit perte bfcmb 'tb-ut when. the beurrne le in oner.-

eelljif curved Supporting eurl'oee 104i; on which :i br ring; 105 e d e rece ruig1 10G :tre indenendently mounted, eeeli oi these 'perte bein n; provided Wi tb correspondingly eiuved bottoni Sn'u'leee to eooiierute with the r-unrlnee l`l. ld'iifotoll y mounted. on the rino;

'lofi nir-ezt nlurfality o? bell orxnlc: lerere 1.07 enen o' wluobv bee un. unire dly entendine,n

i wily inelined erin wbieli provided, et its upper endu 1...: 31,1. :i eoelret IlOFB, that Coopernt e witb o, bell projection 109 on the botto olf euch oit seriee oil beurino Shoes llt). .Tech of the bell erunlr levers ie also prof ed with en outwardlynrctieeting erin lll Wbiob wetende looeeljn through :in opening)n i 15?; in tbe weee rin L06 end is drown downV- wurfllv by si. epi` lll. ln order to adjust tbe tenenin or" the enrino un eye-bolt ill-t ie outer onch tende tbrough e, in. the bell erunlr erin, und

' d on upebown. in gure l (luid boiree ll?" are eu`pinfected on :t et norv breolrot ll und eteh ie iiuwirled .5b n diejolirugni ll9 Wbieh ie in gmfotion to eoonerute with. the upper end :ni'ltofble leu; en mijn our :sud :is: e;

Al. blurulitif o' the erreur ller liluoli fluid boirie eon .r inne 1.20 to the annuler fluid e diaphragm :tor eeelr of the arms and the arrangement ot parts is such that the end thrust pressure tends to force the bearing shoes radially inward, and raise the outwardly extending arms of the bell crank levers in opposition to thel tension ot the springs 11i-l and the cooperating pressure on the diaphragme 119.

A )lurality of bearing balls 121 are interposed between the race ring 98 and the race ring`106 and the parts are so arranged that when the bearing is at rest large proportion of the thrust load is carried by these balls and only a small proportion of the said load is carried by the springs 113 and the diaphiagms 119-this proportion being determined by the adjustment of the spring tensions by the nuts 116. Under these conditions the shoes are lightly pressed into lengagement with the bearing surface 122 of the thrust collar 94, and are free to tilt both tangentially and radially so that they can quickly assume the best position to esablish and maintain the desired oil films between the bearing surfaces. When the bearing rotates at normal speed the oil pressure produced in the chamber' 99 is transmitted through the pipes to the fluid boxes 117 and acts through the diaphragme 119 to push downwardly on the bolts 114 and on the lever arms 1.11. The bearing shoes .llll are thus elevated. as well as moved radially outward, and the load is transferred from the bearing balls to the shoes.

1t is thus apparent that this structure as well as those already described has the advantage ot start-ing easily combined with the eflicient and economical operation which characterizes the Kingsbury shoe bearings.

In the form shown in Figures 18 to 21 inclusive, the rotatable member of the hearing is similar to that of Figure 4 and oomprises the shaft 12 having a thrust block 15, to which a thrust collar 40 is attached. The base is designated 128 and has a beveled or inclined annular' surface 124 in which are a plurality of shallow radial grooves or depressions 125. lVithin this annular' surface there is a concave spherical surface 126 on which a race ning'127 is seated. The latter' is prevented from rotation b v a looselycnraging dowel pin 12S and has an annular groove 129 at the top in which bearing balls 130 are mounted. A sleeve 131 isL attached to the race ring 127 and forms the inner wall of the usual annular oil reservoir 182 which is complet-ed b v the outer housing wall 32,

The collar 10 has preferably a hardened race ring 133 at its inner edge which cooperates with the bearing balls 130. The spherical surface 126 forms a ball and socket joint between the race ring 127 and the base so that the pressure sustained by the bearing balls is equally distributed aiming them.

Mount-ed on the surface 124 ot the base and centered in the grooves 125 are a plurality ot circumferentially distributed rollers 1214 which are mounted on radial pins 135 in a roller cage 136; and each roller is preferably provided with a lug or projcc tion '1l-1T which has the form of a tooth and extends between the bearing shoes 188 which are mounted on the rollers.

The shoes have beveled and inclined surfaces which are adapted to cooperate with the rollers` each shoe being supported on a pair of adjacent rollers as clearly shown in Figure 20. The proper relation between shoes is maintained by the toothed projections 137.

The arrangement ot parts is such that when the rollers are centered as shown in Figure 20 and the bearing surfaces of thc shoes lie in a single plane. the load is largely borne by the bearing balls 130. Nevertheless the bearing shoes are in position to con tact lightly with the annular bearing surface 141 of the thrust collar 40.

Then the bearing is started thc friction between the shoes and the surface 141 causes the shoes to move eircumferentially and in so doingl the rollers '134 are turned so that the leading end of each shoe is lowered whih` its trailing end is elevated.

Thus the shoes are tilted into positions necessary to establish and maintain oil films between theI surfaces. The action of the oil alone tends to tilt the shoes but in this casc thc shoes are mounted so that they are also tilted in the desired direction by reason of their cirraimterential movement.

This tilting movement and the autom-ithl stalilishment of the oil {ilms obviously tends to lift the thrust collar and thus increase the proportion of the load borne by the shoes; and if the parts are verv carefully adjusted this action alone maybe sul'- licieut to relieve thc ball bearings from all thrust prcssure at normal speeds. llowcvcr. when the base is provided with grooves or depressions 125 as shown. thc movement of the rollers on the base obviously tends to further elevate the shoe system as a whole. and thus ensure thc transference oll lhc cntirc load to the surface hcaringr clciocnlf' ol' the structurev The tooth p1oiectiom,` lil? insure the prop.. er Conjoint and cooperative movement of the shoes :md their roller supports but as a l'urtl'lcr means l'or obtaining thc silnulta neous movement ol' the dill'erent rollcr clc ments. `l may provide each alternate rollcr with two oppositely extending radial arms 1-'1-2 having teeth at their ends and connect the adjacent ends of each pair oll arms bv means of a bevel pinion 143 which is in mesh with said teeth and mounted to revolve freely on a pin 144 projecting from the support 145 ef the intermediate roller,

llll

multiljile relation to the shoes, and yielding means 'l'or pressiui-I the .'tlioes inwardly iu opposition to centiif' gal Vtoreo.

In a thrust bearing, the combination ot rolling bearii members, tiltable bearing members adapted to take the thrust to a greater or less de, dependent on their radial adjustment, and means dependent on the operation oit the bearing for producing a radial adjustment :t the tiltable bearing members.

In a thrust bfraring, the combination ot a relatively rotatz. ile thinst member having an annular raee surface, a relatively stationary race ring, a plurality ot rolling bearing members mounted on the race ring and cooperating ivi yh the race surtaee ot the rotatable member, tiltable bearing members interposed between the stationary and rotatable bearing menibers, and means tor trai s Verring the load from the rolling` bearing members to the tiltable bearing members.

l0. In a thrust bearing` the combination ot a. relatively rotatable thrust collar lia-ving an annular race surface, a relatively stationary race ring, an equalising support for the race ring, a plurality of rolling bearing members mounted ou the race ring and cooperating With t-he race surface ot said Collar, and a surface bearing member interposed between said collar and said support.

l1. In a. thrust bearing, the combination oi. a` relatively rotatable thrust collar having an annular race surface, a relatively stationary race ring, an equa ining support therefor, a plurality ot rolling bearing members mounted on the race ring and eooperating With the race surface of said oollar, a surface bearing member intermediate said support and said colla-r, and independent means for equalir/.ing the thrust pressure on the surface bearing member.

12. In a thrust bearing, the combination of a relatively rotatalile thrust member having an annular race surface, a relatively stationary race ring, an equalizinfr support therefor, a plurality of rolling bearing members mounted on the race ring and cooperating with the race surface of the rotatable member, tiltable bearing menibers intermediate said support and the rotatable member.,l and independent means for equalizing the 3ress|.ire on the tiltable bearing`I members.

1?. In a thrust bearing', the combinati/ui of a. relatively rotatable thrust member li ing an annular rane surface, a redatively stationary raee ring. :in equalizing support therefor, a pliu'ality ot rolling bearingmembers mounted on the race ring and eooperating with. 'the race suriaee et the rotat-able member, tiltable bearing members intermediate said support and the rotatable member, independent means for equalizing the pressure on the tiltable bearing members, and means fior transferring load from the rolling bearing members to the tiltable. bearing members.

14. In a, thrust bearing. the combination ol. a relatively rotatable thrust member having an annular race surface, a relatively stationary raee ring. a pluralit7 of rollinglr bearing members mounted on t 1e race ring and cooperating with the race surfare ol the rotatable member, a plurality of tilta` ble bearing members intermediate the stationary and rotatable bearing members, and means dependent on a radial adjustment ol the tiltable bearing members for equally distributing the pressure thereon.

In a thrust bearing, the combination ot a relatively rotatable thrust member haring an annular raee surface, a relativelv stationary 'ace ring` a plurality of rolling bearing members mounted on the race ring and cooperating with the race surface ot the rotatable member. a plurality of tiltable bearing members intermediate the stationary and rotatable bearing members, means dependent on a radial adjustment of the tiltable bearing members for equally distributing the pressure thereon, and means tor transferring the load from they rolling bearing members to the tiltablel bearing members.

1G. In a thrust bearin the combination olf bearing segments, rol ing bearing meinbers. and means mounting said segments whereby the same are movable to transfer a substantial part of the load to the rolling bearing members When the bearing is at rest and to assume the load when the bearing is in operation.

17. In a thrust bearing, the combination oi bearing segments and rolling bearing members, said segments having movement eon'iprising movement in an axial direvition to transfer a substantial part of the load to the rolling bearing members when the, bearing is at rest and to assume the load when the bearing is in operation.

1S. In a thrust bearing, the combination of bearing segments and rolling bearing,r members, said segments being radially movable to transfer a` substantial part ot the. load to the rolling bearing members when the bearing is at rest and to assume the load when the bearing is in operation.

19. In a, thrust bearing, the eombination ot bearing segments and rolling bearing members. said segments being movable in response to centrifugal toreo to assume the, load When the bearing is in operation but transferring a, substantial part of the loazl to said rolling bearing members When the. bearing is at rest.

20. In a thrust bearing, the combination of a series of tiltable bearing members, a

series of rolling bearing members, and

means mounting one of said series for movenfl/rime 9' ment when the bearing is in operation so that the rolling bearing members assume a substantial part ot' the load 'when the bearing is at rest and the tiltable bearing members assume the load when the bearing` is in operation.

21. In a thrust bearing, the combination of a series of tiltable bearing members, a se ries of rolling bearing' members, and means mounting one of said series to move in re spense to centrifugal force whereby the rolling bearing members assume a substantial part `oli the load when the bearing, is at rest and the tiltable bearing members assume the load when the bearing is in operation.

22. In a thrust bearing, the combination oi tiltable bearing members, rolling bearing,` members, and means whereby said tiltable bearing members are moved into a position to assume the load from the rolling bearing members when the bearing is in operation.

23. In a thrust bearing, the combination ot tiltable bearing; members, rolling' bearing members, and means mounting said tiltable bearing members to move radially into a position to assume the load :trom the'rollingl bearing members when the bearing is in operation.

2a. In a thrust bearing, the Combination of tiltable bearing` members, rollingv bearing` members, and means mounting said tiltable bearing members to move in response to eentrit'ugal torce into a position to assume the load from the rolling bearing members when the bearing is in operation.

25. In a thrust bearing, the Combination of a series of bearing segments, a series ol" rolling bearing members adapted to earry a substantial part ot the load when the bearing is at rest, and means operative when the bearing is in operation whereby one ot said series .is moved to Cause the lead to be trans erred to said bearing segments.

26. In a thrust bearing, the Combination ol a series of bearing segments, a series et rolling bearing, members adapted to carry a substantial part ol the load when the bearY ing is at rest, and means whereby one oit said series is moved. in response to eentritugal loree to eause the load to be ltransferred to said bearing segments when 'the bearing is in operation.

27. In a thrust bearing, the combination of relatively rotatable bearing members, radially movable bearing segments between said bearing members, rolling bearing members between said relatively rotatable mem-- bers adapted to carry a substantial part oil? the load when the bearing is at rest, and means mounting said segments whereby they move axially to assume the load when they are moved radially a predetermined amount.

28. In a thrust bearing, the combination of relatively rotatable bearing1 members, radially movable bearingl segments between said 'bearing members, rolling bearing, mem bers between said relatively rotatable members adapted to carry a substantial part of the load when the bearing,l is at rest, and means mounting said segments whereby they are moved radially to assume the lead when the bearing is in operation.

29. In a thrust bearing, the Combination ot relatively rotatable bearing members, radially movable bearing segments between said bearing1 members, rolling bearing members between said relatively rotatable members adapted to carry a substantial part of the load when the bearing is at rest, and means mounting; said segments whereby they are moved radially in response to eentrifugal loree and thereby axially to assume the load when the bearing,` is in operation.

30. In a thrust bearing, relatively rota* table bearing; members, Abearing` segments between said bearing members, rollingbearing members between said relatively rotatable members adapted to assume a substantial part et the load when the bearing is at rest, and means whereby said segments are moved. to assume the load when the bearing is in operation.

a thrust bearing, relatively rotatable bearing members, radially movable bearing segments between said members, rolling; bearing members between said iirstnamed members adapted to assume a sul stantial part oli the load when the bearing at rest, and means whereby said segments are moved radially to assume the load when the bearingis in operation.

32. In a 'thrustbearing, relatively rota table bearing members, radially movable bearing segments between said members, rolling,- bearing members between said firstnamed members adapted to assume a sub stantial part oat the load when the bearing is at rest, resilient means tending to move said segments radially, and means whereby said segments are moved axially to assume the load when the bearing,I is in operation.

In a thrust bearing, relatively rotatable bearing members, radially movable bearing segments between said members, rolling; bearing; members between said firstnamed members adapted to assume a substantial part of the load when the bearing,` is at rest, resilient means tending to move said segments radially inward, and means whereby said segments move axially and radially outward to assume the load when the bearing1 is in operation.

In a thrust bearing, a rotatable bearing member, a plurality ot bearing1 segments mounted thereon, railing bearings for said member adapted to taire a substantial part ot the load when the bearing is at rest, and means whereby said segments are moved to assume the load when the bearing is in operation.

35. In a thrust bearing, a rotatable bearing member, a plurality of bearing segmentsmounted thereon, rolling bearings tor said member adapted to take a substantial part of the load when the bearing is at rest, resilient means tending to move said segments radially inward, and means whereby said segmentsA move radially outward and axially to assume the load when the bearing is in operation.

36. In a thrust bearing, a rota-table bearing member, a plurality of bearing segments mounted thereon, rolling bearings for said member adapted to take a substantial part of the vload when the bearing is at rest, and means mounting said segments whereby they move in response to centrifugal torce to assume the load when the bearing is in operation.

37. In a thrust bearing, a rotatable bearing member, a plurality of bearing segments mounted thereon, rolling bearings for said member adapted to take a substantial part of the load when the bearing is at rest, and means mounting said segments whereby they move radially and axially to assume the load when the bearing is in operation.

38. In a thrust bea-ring, a rotatable bearing member, a plurality of bearing segments, rolling bearings for said member adapted to take a substantial part of the load when the bearing is at rest, and means mounting said segments whereby they move to assume the load when the bearing is in operation and whereby they may tilt both radially and circumferentially.

39. In a thrust bearing, a rotatable bearing member, a plurality of bearing segments mounted thereon, rolling bearings for said member adapted to take a substantial part of the load when the bearing is at rest, a ball pivot for each segment, and an inclined surface on the rotatable member with which the ball cooperates and whereby radial movement; of each segment is accompanied by an axial movement thereof.

40. In a thrust bearing, a rotatable bearing member, a plurality of bearingr segments mounted thereon, rolling bearings for said member adapted to take a substantial part. of the load when the bearing is at rest. a ball pivot for each segment, an inclined surface on the rotatable member with which the ball cooperates and whereby radial movement of the segment is accompanied by an axial movement thereof, and resilient means opposing radial movement of the segments.

4l. In a thrust bearing, relatively rotatable bearing members, bearing segments therebetween,rolling bearing members between SaidIirSt-named members adapted to assume a substantial part of the load when the bearing is at rest, and rolling members supporting said segments and cooperating therewith to move said segments axially to assume the load when the bearing is in 0peration.

42. In a thrust bearing, the combination of relatively rotatable bearing members, bearing segments therebetween, means whereby the pressure on said segments is equalized, rolling bearing members between said firstnamed members adapted to assume a substantial part of the load when the bearing is at rest, and means whereby said segments assume the load when the bearing is in 0peration.

43. In a thrust bearing. the combination of relatively rotatable bearing members, bearing segments therebetween, rolling bearing members between said first-named members adapted to assume a substantial part of the load when the bearing is at rest, and means whereby said segments assume the load when the bearing is in operation.

44. In a thrust bearing, the combination of relatively rotatable bearing members having race surfaces, rolling bearing members between said race surfaces, bearing segments between said relatively rotatable bearing members, and an equalizing support for said rolling bearing members.

15. In a thrust bearing, the combination of relatively rotatable bearing members. bearing segments between said members, ball supports for said segments, rolling bearing,r members between said relatively rotatable members adapted to assume a substantial part of the load when the bearingr is at rest, and means whereby said segments assume the load when the bearing is in operation.

4:6. In a thrust bearing, a series of surtace bearing members, a series of rolling bearing members, and means for moving one of said series whereby the load is transferred from one of said series to the other as the bearing varies its Speed.

4.7. In a thrust bearing, bearing segments, rolling bearing members adapted to carry a substantial part of the load when the bearing is at rest, and means for moving said segments whereby the load is transferred to said segments when the bearing is in operation.

48. In a thrust bearing, a rotatable bearing member, a series ot bearingY segments mounted thereon, a series of rolling bearingr members adapted to take a substantial part of the load when the bearing is at rest, und means whereby one of said series is moved when the bearing is in operation to cause the load to be assumed by said bearing segments.

49. In a thrust bearing, bearing segments. rolling bearing members adapted to carry a. substantial part of the load when the bearing is at rest, and means for movinfr said segments whereby the pressure of said segments on the opposed bearing member is increased when the bearing is in operation.

50. In a thrust bearing, relatively rota table bearing members, bearing segments ben tween said members adapted to take the load when the bea-ring is in operation, and rolling bearing members between said rstnamed members adapted to take a substantial part of the load when the bearing is at rest.

51. In a thrust bearing, the Combination of relatively rotatable bearing members, rolling bearing members therebetween adapted to assume a substantial part of the load when the bearing is at rest, bearing segments between said relatively rotatable members, means whereby said segments assume the load when the bearing is in operation, and an equalizing support for said rolling bearing members.

52. In a thrust bearing, the combination of relatively rotatable members, bearing segments interposed between Said members, roll ing bearing members between said relatively rotatable members adapted to assume a substantial part of the load when the bearing is at rest, and means for moving said segments to assume the load when the bearing is in operation.

In a thrust bearing, relatively rotau table bearing members including bearing segments, rollingbearing members between said first named bearing members, and means whereb said bearing segments are operated when t e bearing is in operation to transfer load from said rolling members to said segments.

In witness whereof', I have hereunto set my hand this 21st day of June, 1918.

FRANK L. VVADSWORTH. 

